Which of the following does the passage mainly discuss? [br] According to the

游客2024-01-05  19

问题  Which of the following does the passage mainly discuss? [br]  According to the passage, the Carboniferous period was characterized by

选项 A、a reduction in the number of coal deposits
B、the burning of a large amount of coal
C、an abundance of plants
D、an accelerated rate of glacier formation

答案 C

解析
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